1.Name:small spring pin. 2.Meterial:Stainless Steel,Tungsten,Low Carbon Steel,etc. 3.Standard:DIN, ASTM,JIS, AS,GB Brief Introduction ... in 1983, DJSF is a specialized enterprise, including screws, spring pins, lock rings, springs ,metallic hoses,stamping parts,sliver cans, tyre ... 2000, and the only one assigned factory that produces spring pins by China National Coal Group Corp. The flat-shaped cotton ...